Observation 178926: Arthonia byssacea (Weigel) Almq.
When: 2013-09-26
(35.66° -83.057° 1125m)

Notes: on sheltered side of trunk of big Carya

open oak-hickory forest on upper part of east-facing slope

crust white immersed, algae trentepohlia, apothecia convex ~round black heavily white-pruinose, epihymenium ~black (opaque?) in section clearing in K, hymenium brownish turning greenish in K K/I+ blue, hypothecium slightly browner also turning greenish in K K/I+ blue, asci broadly clavate ~30×13um thick tip without ocular chamber or anything K/I+ faint bluish centrum K/I+ reddish-golden-brown, spores 8 per ascus 3-septate smooth macrocephalic ~16-17×6-7um

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Created: 2014-09-16 03:21:19 CDT (-0400)
Last modified: 2014-09-16 03:21:20 CDT (-0400)
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